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No. 613,393. Patented Nov. l898. J. T. PEDEBSEN.

DRIVING MECHANISM FOR CYCLES.

(Application filed Oct. 26, 1897-) (No Model.)

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UNITED STATES PATENT EEicE.

JOH ANNES TH. PEDERSEN, OF NEl/V YORK, N. Y.

DRIVING MECHANISM FOR CYCLES.

SPECIFICATION forming part of Letters Patent No. 613,393, dated November 1, 1898. Application filed October 26, 1897. Serial No. 656 ,399. (No model.)

To all whmn it may concern:

Be it known that I, J OHANNES TH. FEDER- SEN, a citizen of the United States, residing at New York, (Woodside,) in the county of Queens and State of New York, have invented an Improvement in Driving Mechanism for Cycles, of which the following is a specification.

The object of the present invention is to employa revolving crank-shaft with gearing and swinging slotted levers acting upon crankpins approximately similar to those in Letters Patent No. 587,601, granted to me August 3, 1897. In this patent are represented connecting-rods between the swinging slotted 1evers and the actuating-pedals, such actuating-pedals being alternately depressed and rising by the action of the crank-pins upon the slotted levers.

In the present instance the crank-shaft is caused to revolve continuously by the action of the cranks and pedals, and swinging sectors and segmental pinions intervene between the connecting-rods'and the crank-shaft, and the parts are constructed in such a manner that the teeth of one segmental pinion do not separate from the segmental rack until the teeth of the other segmental pinion engage the other rack. Thereby there is no risk of the gears becoming separated and the propelling action is continuous and without risk of injury to the teeth. I remark that the opportunity to connect one set of teeth before the other set disconnect arises from the fact that at the end portions of the movements of the connecting-rods both rods are moving in the same direction.

This improvement, while specially available upon the gearing for bicycles, may be employed where swinging motions are to be given from a continuously-revolving device.

In the drawings, Figure 1 is an elevation, and Fig. 2 a plan view, illustrative of the present improvements.

G G represent the slotted levers acting upon crank pins and rollers 7 at one hundred and eighty degrees apart, the wheel H or other device to be rotated being supported by an axis 3, substantially similar to the devices in my aforesaid patent, and the connecting-rods 24 and 25 are employed to give motion to the slotted levers G G. The cranks O O are upon ion r engages the sectional gear t the teeth remain in engagement during half of the revolution of the crank-shaft 27, and then the teeth of the sectional pinion s engage the teeth of the sectional gearu durin g the other half of the rotation of the crank-shaft. The pivots and connections, however, are arranged substantially as shown in Fig. 1, wherein the teeth of the pinion r are represented as engaging the end teeth of the sectional gear t just before separating, the crank-shaft being rotated in the direction of the arrow, and the teeth of the sectional pinion s are also shown as in engagement with the teeth at the front end of the sectional gear ct ready to give to such sectional gear u and the parts connected therewith the motion resulting from a half-revolution of the crank-shaft; and it will be observed that in consequence of the wheel H and axis 3 moving in the direction of the arrow thereon the joint 23 is moving in the direction of the dotted arrow thereon, and the joint 22 is also moving in the same direction. Thereby both the sectional gears tu are moving in the same direction as the sectional pinions upon the crank-shaft, and the movement of the joint 23 in this direction ceases as soon as the last tooth of the sectional pinion r separates from the sectional gear 25, so that the latter may have its return motion during the half-rota= tion of the crank-shaft, and during this time the gear to is in action, and when the positions are reversed the advancing tooth of the sectional pinion r engages the end of the sectional gear 15 before the teeth of the sectional gear on separate from the teeth of the sectional pinion s, and at this time, the positions of the slotted levers G and G being the reverse of that represented, the teeth at the ends of the sectional gears 15 and u will be moving in the same direction as the teeth of the sectional pinions of the crank-shaft, and the teeth of the sectional pinion 0' will engage the teeth of the sectional pinion If to continue the motion as the teeth of 3 separate from u and the latter commences its return movement. Hence by this improvement a continuous rotary motion is transmitted into a reciprocating motion and the teeth of the gears are not liable to concussion or unusual wear, because the strain is gradually transferred from one seetional gear to the other sectional gear while such sectional gears are moving in the same direction as the teeth of the sectional pinions.

It will be apparent thatif the connectingrod Qet is at one side of the machine and the connecting-rod 25 is at the other side of the machine, as in my aforesaid patent, the sectional piniono' will be adjacent to the crank O.

I claim as my invention-- 1. The combination with a rotating shaft and sectional pinions each extending half-way around the shaft, of sectional gears engaging the pinions, connecting-rods and pivoted levers swinging on a common center and a shaft and crank-pins receiving motion from the swinging levers, whereby the sectional gears at the ends of their swinging movements are both moving in the same direction as the seetional pinions, and one engages the teeth thereof before the teeth of the other separate, substantially as specified.

2. The combination with the rotating shaft and sectional pinions, each extending halfway around the shaft, of sectional gears engaging the pinions, a shaft, cranks and levers, and connections between the levers and the sectional gears, the pivots of the levers being located with reference to the cranks so that one lever commences a reverse movement before the other, in order that the sectional gears may both be swinging in the same direction near the ends of their movements, and one sectional pinion is in engagement with one of the sectional gears before the teeth of the other sectional gear separate from the other sectional pinion, substantially as set forth.

Signed by me this 19th day of October, 1807.

JOHANNES TH. PEDERSEN.

lVitnesses:

GEO. T. PINCKNEY, S. T. HAVILAND. 

